Surface-condenser system.



om 0 9 1|. 51 V.. A M D E T N E S 1.. 6 6, 6 8 8 m N APPLICATION FILEDFEB. 10, 1908.

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"Inl/111111111Illu/1,4119 r Inventor". Johanntum |336, V Md@ 1 Y JqttfyWitnesses FIPQE.

JOHANN STUMPF, OF CHARLOTTENBURG, GERMANY.

SURFACE-CONDENSER SYS'IlEM.

T 0 all whom it may concern:

Be it known that I, JOHANN STUMPF, a subject of the Emperor of Germany,residingl at Charlottenburg, German have invented certain new and usefuments in Means for Obtaining a'Vacuum in Surface-Condenser' Systems, 4ofwhich' the following is a specification.

My invention -relates to surface condenser systems, and has for itsobject to improve t em whereby a single ump ,may be utilized to removethe water of) and air from the condenser, and also to circulate thecooling water through the tubes.

In the accompanying drawing, which illustrates one of the embodiments ofmy invention, is shown a surface. condenser s stem.

1 indicates the casing of a su acecondenser having an inlet 2 for thevsteam exhausting from a turbine or other steam-consuming device, and anoutlet 3 for the escape of water of condensation, uncondensed steam andair. In the ,casing are tube sheets 4 that su port the tubes 5 throughwhich the circu ating water is forced.A hambered heads 6 and 7 areprovided on opposite sides ofthe condenser.

Situated below the condenser is a' centrifucasing and above the impelleris a receiving chamber 13 that is in direct communication with theoutlet fioiii the condenser, and through the passage or opening 14 withthe chamber 15 in the impeller, and also with the.

chamber 16 containing the im eller. Extending downwardly through tiereceiving chamber 13 and into the chamber 15 is a conduit 17 throughwhich cold water iiows from the cooling tower or other receptacle 18 bythe pipe 10. The lower end of theconduit 17 is, llared after *passinglthrough the opening 14 so as to effectively discharge the cold waterdirectly to the blades of the'inipeller.

The mixture'from the discharge chamber 12 passes by the pi e 2() intothe chamber in the head 6 from w iich it flows through the tubes intothe chamber in the head 7. From the latter the warm `water iows by thepipe Specification of Letters Patent.

Application led. February 10,1908.

Improvecondensation, steam' e motor may be chamber.

tion of a high vacuum and the air will read- Patented-May 5, 190 8.

Serial No. 415,037.

exhaust steam after leaving the condenser.

comes in direct contact with the cold cooling Water before it passesinto the tubes of the condenser proper. The coolin water underpressure'flows from the conduit 17 into the chamber 16 of the impelleras a free jet. By

Avirtue of the velocity of flow of the cooling water the gas ressureprevailing in the chamber '16 will eas low as that in chamber 18 or evenlower. By'the suction effect of the jet of cooling water as well as thatof the centrifugal pump, the mixture of steam and air is sucked out ofthe chamber 13 through the orifice 22 into the chamber 15, during whichaction the steam is condensed by contact with the cooling water and theair passes into said water. This mixture then enters the impellerbuckets and by them has its pressure increased to an amount sufficientto force'i'tthroughv the condenser.

It is' to be particularly noted that the cooling water passes into thecentrifugal pump in thesame t irection as the escaping steam and airfrom theondensing chamber, and that the pressure-energy of the water Aistransformed into the energy of flow by the pump, thereby adapting it asit flows through the suction chamber of the pump to carryvwith itinjector-wise the air and steam from said This action results in thecreaily pass out with the water. It is also tobe noted that theeffectiveness of the pump is increased and its work reduced by reason ofthe injector actionA of the inflowing cooling water and by reason of thebalancing of the water columns, and further that the pump has to lift auniform mixture.

In accordance with theprovisions of the lpatent statutes, I havedescribed the principle of operation of my invention, together iwith theapparatus which I now consider to re resent the best embodiment thereofbut I esire to have it understood that the apparatus shown isonlyillustrative, andthat the invention can be carried out by othermeans.

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What I claim as new and desireto secure by Letters Patent of the UnitedStates is,- Y

' 1. In combination, a surface condenser, a centrifugal pump having asuction chamber, an impeller for the pump, a conduit which opens intothe vapor space of the condenser and conveys the liquid of condensation,vapor and air to the suction chamber of the pump, a means for supplyingli uid to the suction chamber of the pump un er pressure wherein thepressure is converted into velocit and the fluid permitted to mix withthe Iiquid of condensation, vapor and air prior to being discharged bythe impeller, and a conduit receiving the mixture discharged from thepump and conveying it to the condenser for condensing the vapor therein.

2. In combination, a surface condenser, a centrifugal pump havingasuction chamber, a receiving chamber in the pump communiesami eatingWith the interior of the condenser, a conduit which extends from anexterior point through\\\the chamber and conveys cooling water underpressure to the suction chamber of the pump, and a passage around theconduit which conveys the air and remaining steam fromthe receivingchamber into the cooling water.

3. In combination, a surface condenser, a cooling tower, and a singlepump which removes liquid of condensation, air, and re-l mainin vaporfrom the condenser chamber, mixes tiem with cooled Water from thetower,and discharges the mixture through the condenser to the tower.

In witness whereof I have hereunto set my hand this 2 day of Qecember1907.

. JOHANN STUMPF.

Witnesses:

GOTTFRIED KERKAU, ERNST RIsLER.

